Surface-doped Ru over WO₃ nanocubes for highly selective and ppb-concentration 1-octen-3-ol sensing.

IF 6.1 1区化学 Q1 CHEMISTRY, ANALYTICAL

Talanta Pub Date : 2025-09-30 DOI:10.1016/j.talanta.2025.128933

Tingting Wang, Xinhua Zhao, Zhenxu Li, Yi Zhang, Zhu Zhang, Dachi Yang

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引用次数: 0

Abstract

The newly-emerged gas sensing detection of 1-octen-3-ol biomarker is expected to indirectly monitor foodborne illnesses caused by Salmonella-contaminated meat, which requires high selectivity and a ppb-concentration detection limit. Here, surface-doped ruthenium over tungsten oxide nanocubes (Ru/WO₃ NCBs) have been synthesized by a wet-chemical approach for highly selective and ppb-concentration 1-octen-3-ol sensing. As-prepared Ru/WO₃ NCBs exhibit a polycrystalline structure and consist of NCBs that have an average side length of ∼131 nm, and the Ru/WO₃ NCBs show a high sensing response toward 5 ppm 1-octen-3-ol (R_a/R_g = 406), excellent selectivity, 50 ppb detection limit, 70 % relative humidity tolerance, and 54 days stability at 220 °C. The excellent sensing performance might be attributed to the electronic and chemical sensitization of Ru, which thickens the electron depletion layer and increases adsorbed oxygen to promote interfacial electron transfer and 1-octen-3-ol oxidation. Practically, Ru/WO₃ NCBs have been integrated into a sensing device to simulate detecting 1-octen-3-ol, which has the potential for Salmonella detection in the future.

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表面掺杂钌在WO3纳米立方体上的高选择性和ppb浓度1-辛烯-3-醇传感。

新出现的1-辛烯-3-醇生物标志物气敏检测有望间接监测沙门氏菌污染肉类引起的食源性疾病，该方法要求高选择性和ppb浓度检测限。本文采用湿化学方法合成了表面掺杂氧化钨纳米立方钌（Ru/WO3 NCBs），具有高选择性和ppb浓度1-辛烯-3-醇传感。制备的Ru/WO3 ncb表现出多晶结构，由平均边长为~ 131 nm的ncb组成，Ru/WO3 ncb对5 ppm的1-辛烯-3-醇（Ra/Rg = 406）具有高的传感响应，具有优异的选择性，50 ppb的检测限，70%的相对湿度耐受性，以及在220°C下54天的稳定性。优异的传感性能可能归因于Ru的电子和化学敏化作用，Ru增厚了电子耗尽层，增加了吸附氧，促进了界面电子转移和1-辛烯-3-醇氧化。实际上，Ru/WO3 ncb已经集成到传感装置中模拟检测1-辛烯-3-醇，这在未来有可能用于沙门氏菌检测。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Talanta 化学-分析化学

CiteScore

12.30

自引率

4.90%

发文量

861

审稿时长

29 days

期刊介绍： Talanta provides a forum for the publication of original research papers, short communications, and critical reviews in all branches of pure and applied analytical chemistry. Papers are evaluated based on established guidelines, including the fundamental nature of the study, scientific novelty, substantial improvement or advantage over existing technology or methods, and demonstrated analytical applicability. Original research papers on fundamental studies, and on novel sensor and instrumentation developments, are encouraged. Novel or improved applications in areas such as clinical and biological chemistry, environmental analysis, geochemistry, materials science and engineering, and analytical platforms for omics development are welcome. Analytical performance of methods should be determined, including interference and matrix effects, and methods should be validated by comparison with a standard method, or analysis of a certified reference material. Simple spiking recoveries may not be sufficient. The developed method should especially comprise information on selectivity, sensitivity, detection limits, accuracy, and reliability. However, applying official validation or robustness studies to a routine method or technique does not necessarily constitute novelty. Proper statistical treatment of the data should be provided. Relevant literature should be cited, including related publications by the authors, and authors should discuss how their proposed methodology compares with previously reported methods.